As a warning some of that Turkish 8mm runs hot. The nickel/silver(?) jacketed bullets are the hot rounds and are made for use in MG's. Still safe to run through your mauser though it will just kick a little more than the standard FMJ round.

Cheaper Than Dirt (WWW.cheaperthandirt.com) has it too:
The caveat I heard about the Turkish ammo is that German/Yugo Mausers are set up for a different bullet weight so you may have to adjust your sights. I bought 500 rounds on stripper clips in blue bandoleers. Mine shoots great and came on target quickly in my Yugo M-48.
(BTW, hold tight, the gun has a healthy kick)